期刊
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
卷 57, 期 45, 页码 14847-14851出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201809492
关键词
Bi12O17Cl2 nanotubes; charge separation; CO2 reduction; oxygen defects; photocatalysis
资金
- National Natural Science Foundation of China [21676128, 21576123, 21476098, 11504046]
- MOE Tier 1 grant [RG4/17]
- MOE Tier 2 grant [MOE2016-T2-1-131]
- Singapore National Research Foundation under NRF [NRF-RF2013-08]
Solar-driven reduction of CO2, which converts inexhaustible solar energy into value-added fuels, has been recognized as a promising sustainable energy conversion technology. However, the overall conversion efficiency is significantly limited by the inefficient charge separation and sluggish interfacial reaction dynamics, which resulted from a lack of sufficient active sites. Herein, Bi12O17Cl2 superfine nanotubes with a bilayer thickness of the tube wall are designed to achieve structural distortion for the creation of surface oxygen defects, thus accelerating the carrier migration and facilitating CO2 activation. Without cocatalyst and sacrificing reagent, Bi12O17Cl2 nanotubes deliver high selectivity CO evolution rate of 48.6molg(-1)h(-1) in water (16.8 times than of bulk Bi12O17Cl2), while maintaining stability even after 12h of testing. This paves the way to design efficient photocatalysts with collaborative optimizing charge separation and CO2 activation towards CO2 photoreduction.
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